It’s amazing how a combination of red and brown onion skins makes yellow! I layered them in the clothes, then folded them and rolled them tightly before simmering them for several hours in a crockpot. For sale here.
I asked the supermarket across the street from the gallery to save onion skins for me from their vegetable department. The result is a gorgeous pink and gold/green mottled effect on this vintage slip! Dye pot of bracken fern and alum in an electric urn (the slip was also wrapped and tied around a rusty trampoline spring).